<template>
	<div class="bread-container b_b_F1F5FA flexrsc">
		<div class="left-line"></div>
		<el-breadcrumb class="app-breadcrumb" separator=">">
			<transition-group name="breadcrumb">
				<el-breadcrumb-item v-for="(item, index) in levelList" :key="item.path">
					<span v-if="
              item.redirect === 'noRedirect' || index == levelList.length - 1
            " class="no-redirect">{{ item.meta.title }}</span>
					<a v-else @click.prevent="handleLink(item)">{{ item.meta.title }}</a>
				</el-breadcrumb-item>
			</transition-group>
		</el-breadcrumb>
	</div>
</template>

<script>
	import pathToRegexp from "path-to-regexp";

	export default {
		data() {
			return {
				levelList: null,
			};
		},
		watch: {
			themeColor(newValue) {
				this.updateCSSVariable('--theme-color', newValue);
			},
			$route() {
				this.getBreadcrumb();
			},
		},
		created() {
			this.getBreadcrumb();

		},
		computed: {
			themeColor() {
				return this.$store.state.settings.themeColor;
			},
			themeStyle() {
				return {
					'--theme-color': this.themeColor,
				};
			},
		},
		mounted() {
			this.updateCSSVariable('--theme-color', this.themeColor);
		},
		methods: {
			updateCSSVariable(varName, value) {
				document.documentElement.style.setProperty(varName, value);
			},
			getBreadcrumb() {
				// only show routes with meta.title
				let matched = this.$route.matched.filter(
					(item) => item.meta && item.meta.title
				);
				const first = matched[0];

				// if (!this.isDashboard(first)) {
				//   matched = [{ path: '/dashboard', meta: { title: 'Dashboard' }}].concat(matched)
				// }

				this.levelList = matched.filter(
					(item) => item.meta && item.meta.title && item.meta.breadcrumb !== false
				);
				// console.log(this.levelList);
			},
			isDashboard(route) {
				const name = route && route.name;
				if (!name) {
					return false;
				}
				return (
					name.trim().toLocaleLowerCase() === "Dashboard".toLocaleLowerCase()
				);
			},
			pathCompile(path) {
				// To solve this problem https://github.com/PanJiaChen/vue-element-admin/issues/561
				const {
					params
				} = this.$route;
				var toPath = pathToRegexp.compile(path);
				return toPath(params);
			},
			handleLink(item) {
				// const { redirect, path } = item;
				// if (redirect) {
				//   this.$router.push(redirect);
				//   return;
				// }
				this.$router.push(this.$route.meta.parents);
			},

		}
	}
</script>

<style lang="scss" scoped>
	.bread-container {
		background: #fff;

		.left-line {
			width: 5px;
			height: 18px;
			background: var(--theme-color);
			// margin-right: =px;
			margin-left: 10px;
		}
	}

	.app-breadcrumb.el-breadcrumb {
		display: inline-block;
		font-size: 14px;
		line-height: 39px;
		margin-left: 8px;

		.no-redirect {
			color: var(--theme-color);
			font-weight: 700;
			cursor: text;
		}
	}
</style>